diff --git a/pom.xml b/pom.xml
index 69e5dc7..645a7e2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   </parent>
   <groupId>org.apache.tajo</groupId>
   <artifactId>tajo-main</artifactId>
-  <version>0.12.0-SNAPSHOT</version>
+  <version>0.12.0</version>
   <description>Tajo Main</description>
   <url>http://tajo.apache.org/</url>
   <name>Tajo Main</name>
@@ -58,7 +58,7 @@
     <url>https://github.com/apache/tajo.git</url>
     <connection>scm:git:git@github.com:apache/tajo.git</connection>
     <developerConnection>scm:git:git@github.com:apache/tajo.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>release-0.12.0-rc0</tag>
   </scm>
 
   <repositories>
diff --git a/tajo-algebra/pom.xml b/tajo-algebra/pom.xml
index c963f9f..87c7252 100644
--- a/tajo-algebra/pom.xml
+++ b/tajo-algebra/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-algebra</artifactId>
diff --git a/tajo-catalog/pom.xml b/tajo-catalog/pom.xml
index 579472c..68cf23f 100644
--- a/tajo-catalog/pom.xml
+++ b/tajo-catalog/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
 	  <relativePath>../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-catalog/tajo-catalog-client/pom.xml b/tajo-catalog/tajo-catalog-client/pom.xml
index e5c171d..5fa366b 100644
--- a/tajo-catalog/tajo-catalog-client/pom.xml
+++ b/tajo-catalog/tajo-catalog-client/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
 	  <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-catalog/tajo-catalog-common/pom.xml b/tajo-catalog/tajo-catalog-common/pom.xml
index 29cbacc..e9a9673 100644
--- a/tajo-catalog/tajo-catalog-common/pom.xml
+++ b/tajo-catalog/tajo-catalog-common/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
 	  <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-catalog/tajo-catalog-drivers/pom.xml b/tajo-catalog/tajo-catalog-drivers/pom.xml
index 0738e11..a0cc366 100644
--- a/tajo-catalog/tajo-catalog-drivers/pom.xml
+++ b/tajo-catalog/tajo-catalog-drivers/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
 	  <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-catalog/tajo-catalog-drivers/tajo-hive/pom.xml b/tajo-catalog/tajo-catalog-drivers/tajo-hive/pom.xml
index d848461..c6275e5 100644
--- a/tajo-catalog/tajo-catalog-drivers/tajo-hive/pom.xml
+++ b/tajo-catalog/tajo-catalog-drivers/tajo-hive/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-catalog/tajo-catalog-server/pom.xml b/tajo-catalog/tajo-catalog-server/pom.xml
index 4c585f9..5e69dc3 100644
--- a/tajo-catalog/tajo-catalog-server/pom.xml
+++ b/tajo-catalog/tajo-catalog-server/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-cli/pom.xml b/tajo-cli/pom.xml
index 187b25d..4218e3e 100644
--- a/tajo-cli/pom.xml
+++ b/tajo-cli/pom.xml
@@ -17,13 +17,12 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-cli</artifactId>
diff --git a/tajo-client-example/pom.xml b/tajo-client-example/pom.xml
index daee2f9..19b1c5d 100644
--- a/tajo-client-example/pom.xml
+++ b/tajo-client-example/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-client-example</artifactId>
diff --git a/tajo-client/pom.xml b/tajo-client/pom.xml
index b37a98b..54df196 100644
--- a/tajo-client/pom.xml
+++ b/tajo-client/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-client</artifactId>
diff --git a/tajo-cluster-tests/pom.xml b/tajo-cluster-tests/pom.xml
index 7b537ff..cf7af0b 100644
--- a/tajo-cluster-tests/pom.xml
+++ b/tajo-cluster-tests/pom.xml
@@ -17,14 +17,12 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-cluster-tests</artifactId>
diff --git a/tajo-common/pom.xml b/tajo-common/pom.xml
index 67128e5..cff0f40 100644
--- a/tajo-common/pom.xml
+++ b/tajo-common/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
 
diff --git a/tajo-core-tests/pom.xml b/tajo-core-tests/pom.xml
index 74106d1..5351ccc 100644
--- a/tajo-core-tests/pom.xml
+++ b/tajo-core-tests/pom.xml
@@ -17,14 +17,12 @@
   ~ limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-core-tests</artifactId>
diff --git a/tajo-core/pom.xml b/tajo-core/pom.xml
index 0a99de6..5346bb3 100644
--- a/tajo-core/pom.xml
+++ b/tajo-core/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-core</artifactId>
diff --git a/tajo-dist/pom.xml b/tajo-dist/pom.xml
index cbbd763..0a77ebf 100644
--- a/tajo-dist/pom.xml
+++ b/tajo-dist/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-jdbc/pom.xml b/tajo-jdbc/pom.xml
index fc9f39d..72cf78e 100644
--- a/tajo-jdbc/pom.xml
+++ b/tajo-jdbc/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-jdbc</artifactId>
diff --git a/tajo-maven-plugins/pom.xml b/tajo-maven-plugins/pom.xml
index 3c4435c..030a9d1 100644
--- a/tajo-maven-plugins/pom.xml
+++ b/tajo-maven-plugins/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <groupId>org.apache.tajo</groupId>
     <artifactId>tajo-project</artifactId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <groupId>org.apache.tajo</groupId>
diff --git a/tajo-metrics/pom.xml b/tajo-metrics/pom.xml
index f65b0fc..3f75eea 100644
--- a/tajo-metrics/pom.xml
+++ b/tajo-metrics/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-metrics</artifactId>
diff --git a/tajo-plan/pom.xml b/tajo-plan/pom.xml
index 9dff797..1ec7b56 100644
--- a/tajo-plan/pom.xml
+++ b/tajo-plan/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-plan</artifactId>
diff --git a/tajo-project/pom.xml b/tajo-project/pom.xml
index 11b0d61..dbd95a5 100644
--- a/tajo-project/pom.xml
+++ b/tajo-project/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <groupId>org.apache.tajo</groupId>
     <artifactId>tajo-main</artifactId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
   </parent>
   <artifactId>tajo-project</artifactId>
   <description>Tajo Project POM</description>
@@ -121,7 +121,7 @@
       <id>hjkim</id>
       <name>Hyoung Jun Kim</name>
       <email>hjkim@apache.org</email>
-      <organization></organization>
+      <organization />
       <roles>
         <role>PMC</role>
       </roles>
@@ -131,7 +131,7 @@
       <id>hyunsik</id>
       <name>Hyunsik Choi</name>
       <email>hyunsik@apache.org</email>
-      <organization></organization>
+      <organization />
       <roles>
         <role>V.P.</role>
       </roles>
@@ -141,7 +141,7 @@
       <id>blrunner</id>
       <name>JaeHwa Jung</name>
       <email>blrunner@apache.org</email>
-      <organization></organization>
+      <organization />
       <roles>
         <role>PMC</role>
       </roles>
@@ -161,7 +161,7 @@
       <id>jhkim</id>
       <name>Jinho Kim</name>
       <email>jhkim@apache.org</email>
-      <organization></organization>
+      <organization />
       <roles>
         <role>PMC</role>
       </roles>
@@ -181,7 +181,7 @@
       <id>jihun</id>
       <name>Jihun Kang</name>
       <email>jihun@apache.org</email>
-      <organization></organization>
+      <organization />
       <roles>
         <role>Committer</role>
       </roles>
@@ -271,7 +271,7 @@
     </contributor>
     <contributor>
       <name>Dongkyu Hwangbo</name>
-      <organization></organization>
+      <organization />
       <roles><role>Contributor</role></roles>
     </contributor>
     <contributor>
@@ -296,7 +296,7 @@
     </contributor>
     <contributor>
       <name>Jongyoung Park</name>
-      <organization></organization>
+      <organization />
       <roles><role>Contributor</role></roles>
     </contributor>
     <contributor>
@@ -321,7 +321,7 @@
     </contributor>
     <contributor>
       <name>Tae-kyeong Goh</name>
-      <organization></organization>
+      <organization />
       <roles><role>Logo Designer</role></roles>
     </contributor>
     <contributor>
@@ -340,12 +340,12 @@
     </contributor>
     <contributor>
       <name>YeonSu Han</name>
-      <organization></organization>
+      <organization />
       <roles><role>Contributor</role></roles>
     </contributor>
     <contributor>
       <name>Yongjun Park</name>
-      <organization></organization>
+      <organization />
       <roles><role>Contributor</role></roles>
     </contributor>
     <contributor>
@@ -364,7 +364,7 @@
     <url>https://github.com/apache/tajo.git</url>
     <connection>scm:git:https://github.com/apache/tajo.git</connection>
     <developerConnection>scm:git:https://github.com/apache/tajo.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>release-0.12.0-rc0</tag>
   </scm>
 
   <mailingLists>
diff --git a/tajo-pullserver/pom.xml b/tajo-pullserver/pom.xml
index 6c805ac..f4d6632 100644
--- a/tajo-pullserver/pom.xml
+++ b/tajo-pullserver/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-rpc/pom.xml b/tajo-rpc/pom.xml
index 35231b3..02f13e7 100644
--- a/tajo-rpc/pom.xml
+++ b/tajo-rpc/pom.xml
@@ -20,7 +20,7 @@
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <artifactId>tajo-project</artifactId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <groupId>org.apache.tajo</groupId>
     <relativePath>../tajo-project</relativePath>
   </parent>
diff --git a/tajo-rpc/tajo-rpc-common/pom.xml b/tajo-rpc/tajo-rpc-common/pom.xml
index 80fb9ac..b388ce9 100644
--- a/tajo-rpc/tajo-rpc-common/pom.xml
+++ b/tajo-rpc/tajo-rpc-common/pom.xml
@@ -20,7 +20,7 @@
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <artifactId>tajo-project</artifactId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <groupId>org.apache.tajo</groupId>
     <relativePath>../../tajo-project</relativePath>
   </parent>
diff --git a/tajo-rpc/tajo-rpc-protobuf/pom.xml b/tajo-rpc/tajo-rpc-protobuf/pom.xml
index 128d2dc..9346338 100644
--- a/tajo-rpc/tajo-rpc-protobuf/pom.xml
+++ b/tajo-rpc/tajo-rpc-protobuf/pom.xml
@@ -20,7 +20,7 @@
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <artifactId>tajo-project</artifactId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <groupId>org.apache.tajo</groupId>
     <relativePath>../../tajo-project</relativePath>
   </parent>
diff --git a/tajo-rpc/tajo-ws-rs/pom.xml b/tajo-rpc/tajo-ws-rs/pom.xml
index 3064d62..825432c 100644
--- a/tajo-rpc/tajo-ws-rs/pom.xml
+++ b/tajo-rpc/tajo-ws-rs/pom.xml
@@ -20,7 +20,7 @@
   <modelVersion>4.0.0</modelVersion>
   <parent>
     <artifactId>tajo-project</artifactId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <groupId>org.apache.tajo</groupId>
     <relativePath>../../tajo-project</relativePath>
   </parent>
diff --git a/tajo-sql-parser/pom.xml b/tajo-sql-parser/pom.xml
index 956e410..b6eacf0 100644
--- a/tajo-sql-parser/pom.xml
+++ b/tajo-sql-parser/pom.xml
@@ -22,7 +22,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <artifactId>tajo-sql-parser</artifactId>
diff --git a/tajo-storage/pom.xml b/tajo-storage/pom.xml
index 396484f..dcbb6e5 100644
--- a/tajo-storage/pom.xml
+++ b/tajo-storage/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-storage/tajo-storage-common/pom.xml b/tajo-storage/tajo-storage-common/pom.xml
index 3bc402d..b506b3f 100644
--- a/tajo-storage/tajo-storage-common/pom.xml
+++ b/tajo-storage/tajo-storage-common/pom.xml
@@ -17,11 +17,11 @@
 limitations under the License.
 -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-storage/tajo-storage-hbase/pom.xml b/tajo-storage/tajo-storage-hbase/pom.xml
index 7d178cc..b56a879 100644
--- a/tajo-storage/tajo-storage-hbase/pom.xml
+++ b/tajo-storage/tajo-storage-hbase/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-storage/tajo-storage-hdfs/pom.xml b/tajo-storage/tajo-storage-hdfs/pom.xml
index 5542d9c..ca9dcea 100644
--- a/tajo-storage/tajo-storage-hdfs/pom.xml
+++ b/tajo-storage/tajo-storage-hdfs/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-storage/tajo-storage-jdbc/pom.xml b/tajo-storage/tajo-storage-jdbc/pom.xml
index ecf71e3..35f5ec2 100644
--- a/tajo-storage/tajo-storage-jdbc/pom.xml
+++ b/tajo-storage/tajo-storage-jdbc/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-storage/tajo-storage-kafka/pom.xml b/tajo-storage/tajo-storage-kafka/pom.xml
index 4fe6750..b7ff8a5 100644
--- a/tajo-storage/tajo-storage-kafka/pom.xml
+++ b/tajo-storage/tajo-storage-kafka/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-storage/tajo-storage-pgsql/pom.xml b/tajo-storage/tajo-storage-pgsql/pom.xml
index 6f37ab6..a7f4200 100644
--- a/tajo-storage/tajo-storage-pgsql/pom.xml
+++ b/tajo-storage/tajo-storage-pgsql/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-storage/tajo-storage-s3/pom.xml b/tajo-storage/tajo-storage-s3/pom.xml
index 6956411..dfa9482 100644
--- a/tajo-storage/tajo-storage-s3/pom.xml
+++ b/tajo-storage/tajo-storage-s3/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-tablespace-example/pom.xml b/tajo-tablespace-example/pom.xml
index a38ba19..5a533e1 100644
--- a/tajo-tablespace-example/pom.xml
+++ b/tajo-tablespace-example/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project/pom.xml</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>
diff --git a/tajo-thirdparty/asm/pom.xml b/tajo-thirdparty/asm/pom.xml
index 6981edb..da0deaa 100644
--- a/tajo-thirdparty/asm/pom.xml
+++ b/tajo-thirdparty/asm/pom.xml
@@ -17,7 +17,7 @@
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../../tajo-project</relativePath>
   </parent>
 
diff --git a/tajo-yarn/pom.xml b/tajo-yarn/pom.xml
index cb47276..66cd201 100644
--- a/tajo-yarn/pom.xml
+++ b/tajo-yarn/pom.xml
@@ -17,13 +17,11 @@
   limitations under the License.
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <parent>
     <artifactId>tajo-project</artifactId>
     <groupId>org.apache.tajo</groupId>
-    <version>0.12.0-SNAPSHOT</version>
+    <version>0.12.0</version>
     <relativePath>../tajo-project</relativePath>
   </parent>
   <modelVersion>4.0.0</modelVersion>